19660147240

素因数分解:

$2^3\times 5^1\times {\mathrm{6653}}^1\times {\mathrm{73877}}^1$

素因数の和:80541

約数の個数: 32

約数和(自身を含む): 44242579080

約数和(自身を除く): 24582431840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6653, 13306, 26612, 33265, 53224, 66530, 73877, 133060, 147754, 266120, 295508, 369385, 591016, 738770, 1477540, 2955080, 491503681, 983007362, 1966014724, 2457518405, 3932029448, 4915036810, 9830073620, 19660147240]

約数ペア:

[(1, 19660147240), (2, 9830073620), (4, 4915036810), (5, 3932029448), (8, 2457518405), (10, 1966014724), (20, 983007362), (40, 491503681), (6653, 2955080), (13306, 1477540), (26612, 738770), (33265, 591016), (53224, 369385), (66530, 295508), (73877, 266120), (133060, 147754)]